So for the last 2 days I've been tryin to mount Michelin Pilot Sports..255/35/18 on the rear and it JUST WON"T SEAL!!! I dunno I even let em sit in the sun to warm up a lil and NOPE. My last attempt is to use ether. If this doesn't work I'm going to have to try another brand tire. I just want to know what brands in a 255/35/18 people are using that WORKS!..thank u